COMMISSIONING AND TESTING GUIDE 35
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FT-14D Flexitest switch
FT-14D digital test switches are used for efficient
testing of protection and control relay during
regular maintenance. The FT-14D test switch is
usually supplied as a flush mounting type on the
low voltage compartment door. The testing of
protection and control relay's sensor inputs is
possible without opening the low voltage
compartment door.
FT-14D test switch
A digital test switch is used for efficient testing
of a protection and control relay with sensor
inputs. Each FT-14D switch takes 3 phase current
and voltage sensor inputs with a separate input
for ground CT connection. A typical connection
diagram is shown below.
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70
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70 Typical FT-14D
connection diagram
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71 FT-14D front view
and rear view
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71
No CT shorting required Connections to the Relion®
relay and sensors
Standard screw type
connections
Lamicoid labels included
on each handle
Passive electronic
module
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